function land() {
    axios.get("/user/login", {
        params: {
            userName: $("userName").value,
            password: $("password").value
        }
    }).then(resp => {
        var info = resp.data;
        if (info == "ok") {
            location.href = "/index.html";
        } else {
            $("errorText").innerHTML = "登陆失败!账号或密码输入错误！";
        }
    })
}